Letter opener



FIG. 1 is a right side elevational view of a letter opener showing my new design;

FIG. 2 is a cross-sectional view thereof taken along line 2--2 of FIG. 5, looking in the direction of the arrows;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a cross-sectional view thereof taken along line 4--4 of FIG. 6, looking in the direction of the arrows;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a letter opener, as shown and described. 